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https://github.com/jerryscript-project/jerryscript.git
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56 lines
2.0 KiB
Python
56 lines
2.0 KiB
Python
#!/usr/bin/env python
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# Copyright JS Foundation and other contributors, http://js.foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import select
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import serial
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class Serial(object):
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""" Create a new socket using the given address family, socket type and protocol number. """
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def __init__(self, serial_config):
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config = serial_config.split(',')
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config_size = len(config)
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port = config[0] if config_size > 0 else "/dev/ttyUSB0"
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baudrate = config[1] if config_size > 1 else 115200
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bytesize = int(config[2]) if config_size > 2 else 8
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parity = config[3] if config_size > 3 else 'N'
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stopbits = int(config[4]) if config_size > 4 else 1
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self.ser = serial.Serial(port=port, baudrate=baudrate, parity=parity,
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stopbits=stopbits, bytesize=bytesize, timeout=1)
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def connect(self):
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""" Connect to the server, write a 'c' to the serial port """
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self.send_data('c')
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def close(self):
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"""" close the serial port. """
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self.ser.close()
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def receive_data(self, max_size=1024):
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""" The maximum amount of data to be received at once is specified by max_size. """
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return self.ser.read(max_size)
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def send_data(self, data):
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""" Write data to the serial port. """
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return self.ser.write(data)
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def ready(self):
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""" Monitor the file descriptor. """
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result = select.select([self.ser.fileno()], [], [], 0)[0]
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return self.ser.fileno() in result
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